Click 'Start the NVIDIA Control panel'. (You need to have these NVIDIA utilities installed.)14Inside NVIDIA control panel, from the left side navigation bar, under 'Display' select 'Adjust desktop color setting'.15Under '2. Apply the following ....' switch to graph tab.16There are three points already forming the graph, select the one on the upper right side of the graph and set the values 'In' to 1, and 'Out' to 0.17Then Select the point on the lower left of the graph and set the values 'In' to 0, and 'Out' to 1.18Thats it, click 'Apply' and done!

The question which remains to be answered is what requires more CPU, ahk or nvidia, hopefully ahk, then we would have an improvement. Then you can use the script of Learning one to go to normal colors, for a short time, then returning back to your favoured inverted colors.

Thanks Learning one for this great idea, I enjoy those new inverted colors.

Power Strip is a great program, PERFECTLY inverts color on my old computer with 2 monitors and ati graphic card (i have profiles: only left inverted, only right, none, and both and i have hotkeys for each profile), on my PC i got 2 days ago, i have nvidia gt430 and nvidia cards don't let you check the "Write directly to palette DAC" box so powerstrip CANT invert colors (on newer nvidia cards), i have read somewhere that you can invert colors in nvidia control panel (i think this is true but was unable to check for myself) http://www.wikihow.c...Your-Windows-XPpoint 9-18 explains how you can do that on (and only on) windows XP because of point 15 "Under '2. Apply the following ....' switch to graph tab."nvidia control panel "graph" help:"Graph Tab (Windows XP only)For those experienced with color correction using curves, the graph tab provides more precise control over the desktop color balance."under windows 7 there is no graph tab hence not powerstrip nor nvidia itself can't invert colors...

i am thinking of changing my graphic card for some ati card if i dont find the solution soon...

Yes I am with you on this Windows 7 graph tab in Control Panel. Why in the world did they remove that functionality? Has anyone found a solution for this, to invert the colors in Windows 7? I am going to be switching to ATI shortly to see if that fixes the problem.

I've been looking for a screen inverter for over a year now. It seems a little buggy when you open an "Always on Top" window after inverting, but it's just a matter of hitting F9 twice. The CPU usage is a little noticeable, but since I'm going to be using this majorly for text-heavy pages, no real issues.

Just found this great tool, Negative Screen. Perhaps it could be an alternative solution. It inverts colors through a minimalistic interface and also offers different inversion modes such as sepia and black & white!